package com.yueke.gemini.utils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
 * Created by admin on 2017/3/7.
 */
public class DateUtils {

    public DateUtils(){}

    /**

//     * @see 取得当前日期（格式为：yyyy-MM-dd）

     * @return String

     */

    public String GetDate()

    {

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

        String sDate = sdf.format(new Date());

        return sDate;

    }

    /**

//     * @see 取得当前时间（格式为：yyy-MM-dd HH:mm:ss）

     * @return String

     */

    public static String GetDateTime() {

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        String sDate = sdf.format(new Date());

        return sDate;

    }

    /**

//     * @see  按指定格式取得当前时间 ()

     * @return String

     */

    public String GetTimeFormat(String strFormat) {

        SimpleDateFormat sdf = new SimpleDateFormat(strFormat);

        String sDate = sdf.format(new Date());

        return sDate;

    }

    /**

//     * @see 取得指定时间的给定格式()

     * @return String

     * @throws ParseException

     */

    public String SetDateFormat(String myDate,String strFormat) throws ParseException {

        SimpleDateFormat sdf = new SimpleDateFormat(strFormat);

        String sDate = sdf.format(sdf.parse(myDate));

        return sDate;

    }

    public String FormatDateTime(String strDateTime, String strFormat) {

        String sDateTime = strDateTime;

        try {

            Calendar Cal = parseDateTime(strDateTime);

            SimpleDateFormat sdf = null;

            sdf = new SimpleDateFormat(strFormat);

            sDateTime = sdf.format(Cal.getTime());

        } catch (Exception e) {

        }

        return sDateTime;

    }

    public static Calendar parseDateTime(String baseDate) {

        Calendar cal = null;

        cal = new GregorianCalendar();

        int yy = Integer.parseInt(baseDate.substring(0, 4));

        int mm = Integer.parseInt(baseDate.substring(5, 7)) - 1;

        int dd = Integer.parseInt(baseDate.substring(8, 10));

        int hh = 0;

        int mi = 0;

        int ss = 0;

        if(baseDate.length() > 12)

        {

            hh = Integer.parseInt(baseDate.substring(11, 13));

            mi = Integer.parseInt(baseDate.substring(14, 16));

            ss = Integer.parseInt(baseDate.substring(17, 19));

        }

        cal.set(yy, mm, dd, hh, mi, ss);

        return cal;

    }

    public int getDay(String strDate) {

        Calendar cal = parseDateTime(strDate);

        return cal.get(Calendar.DATE);

    }

    public int getMonth(String strDate)

    {

        Calendar cal = parseDateTime(strDate);

        return cal.get(Calendar.MONTH) + 1;

    }

    public int getWeekDay(String strDate) {

        Calendar cal = parseDateTime(strDate);

        return cal.get(Calendar.DAY_OF_WEEK);

    }

    public String getWeekDayName(String strDate) {

        String mName[] = {"日", "一", "二", "三", "四", "五", "六"};

        int iWeek = getWeekDay(strDate);

        iWeek = iWeek - 1;

        return "星期" + mName[iWeek];

    }

    public int getYear(String strDate) {

        Calendar cal = parseDateTime

                (strDate);

        return cal.get(Calendar.YEAR) + 1900;

    }

    public String DateAdd(String strDate, int iCount, int iType) {

        Calendar Cal = parseDateTime(strDate);

        int pType = 0;

        if(iType == 0)

        {

            pType = 1;

        } else

        if(iType == 1)

        {

            pType = 2;

        } else

        if(iType == 2)

        {

            pType = 5;

        } else

        if(iType == 3)

        {

            pType = 10;

        } else

        if(iType == 4)

        {

            pType = 12;

        } else

        if(iType == 5)

        {

            pType = 13;

        }

        Cal.add(pType, iCount);

        SimpleDateFormat sdf = null;

        if(iType <= 2)

            sdf = new SimpleDateFormat("yyyy-MM-dd");

        else

            sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        String sDate = sdf.format(Cal.getTime());

        return sDate;

    }

    public String DateAdd(String strOption, int iDays, String strStartDate) {

        if(!strOption.equals("d"));

        return strStartDate;

    }

    public int DateDiff(String strDateBegin, String strDateEnd, int iType) {

        Calendar calBegin = parseDateTime(strDateBegin);

        Calendar calEnd = parseDateTime(strDateEnd);

        long lBegin = calBegin.getTimeInMillis();

        long lEnd = calEnd.getTimeInMillis();

        int ss = (int)((lBegin - lEnd) / 1000L);

        int min = ss / 60;

        int hour = min / 60;

        int day = hour / 24;

        if(iType == 0)

            return hour;

        if(iType == 1)

            return min;

        if(iType == 2)

            return day;

        else

            return -1;

    }

    /*****************************************

     * @功能 判断某年是否为闰年

     * @return boolean

     * @throws ParseException

     ****************************************/

    public boolean isLeapYear(int yearNum){

        boolean isLeep = false;

        /**判断是否为闰年，赋值给一标识符flag*/

        if((yearNum % 4 == 0) && (yearNum % 100 != 0)){

            isLeep = true;

        } else if(yearNum % 400 ==0){

            isLeep = true;

        } else {

            isLeep = false;

        }

        return isLeep;

    }

    /*****************************************

     * @功能 计算当前日期某年的第几周

     * @return interger

     * @throws ParseException

     ****************************************/

    public int getWeekNumOfYear(){

        Calendar calendar = Calendar.getInstance();

        int iWeekNum = calendar.get(Calendar.WEEK_OF_YEAR);

        return iWeekNum;

    }

    /*****************************************

     * @功能 计算指定日期某年的第几周

     * @return interger

     * @throws ParseException

     ****************************************/

    public int getWeekNumOfYearDay(String strDate ) throws ParseException{

        Calendar calendar = Calendar.getInstance();

        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

        Date curDate = format.parse(strDate);

        calendar.setTime(curDate);

        int iWeekNum = calendar.get(Calendar.WEEK_OF_YEAR);

        return iWeekNum;

    }

    /*****************************************

     * @功能 计算某年某周的开始日期

     * @return interger

     * @throws ParseException

     ****************************************/

    public String getYearWeekFirstDay(int yearNum,int weekNum) throws ParseException {

        Calendar cal = Calendar.getInstance();

        cal.set(Calendar.YEAR, yearNum);

        cal.set(Calendar.WEEK_OF_YEAR, weekNum);

        cal.set(Calendar.DAY_OF_WEEK, Calendar.

                MONDAY);

        //分别取得当前日期的年、月、日
        String tempYear = Integer.toString(yearNum);

        String tempMonth = Integer.toString(cal.get(Calendar.MONTH) + 1);

        String tempDay = Integer.toString(cal.get(Calendar.DATE));

        String tempDate = tempYear + "-" +tempMonth + "-" + tempDay;

        return SetDateFormat(tempDate,"yyyy-MM-dd");

    }

    /*****************************************

     * @功能 计算某年某周的结束日期

     * @return interger

     * @throws ParseException

     ****************************************/

    public String getYearWeekEndDay(int yearNum,int weekNum) throws ParseException {

        Calendar cal = Calendar.getInstance();

        cal.set(Calendar.YEAR, yearNum);

        cal.set(Calendar.WEEK_OF_YEAR, weekNum + 1);

        cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);

//分别取得当前日期的年、月、日

        String tempYear = Integer.toString(yearNum);

        String tempMonth = Integer.toString(cal.get(Calendar.MONTH) + 1);

        String tempDay = Integer.toString(cal.get(Calendar.DATE));

        String tempDate = tempYear + "-" +tempMonth + "-" + tempDay;

        return SetDateFormat(tempDate,"yyyy-MM-dd");

    }

    /*****************************************

     * @功能 计算某年某月的开始日期

     * @return interger

     * @throws ParseException

     ****************************************/

    public String getYearMonthFirstDay(int yearNum,int monthNum) throws ParseException {

//分别取得当前日期的年、月、日

        String tempYear = Integer.toString(yearNum);

        String tempMonth = Integer.toString(monthNum);

        String tempDay = "1";

        String tempDate = tempYear + "-" +tempMonth + "-" + tempDay;

        return SetDateFormat(tempDate,"yyyy-MM-dd");

    }

    /*****************************************

     * @功能 计算某年某月的结束日期

     * @return interger

     * @throws ParseException

     ****************************************/

    public String getYearMonthEndDay(int yearNum,int monthNum) throws ParseException {

//分别取得当前日期的年、月、日

        String tempYear = Integer.toString(yearNum);

        String tempMonth = Integer.toString(monthNum);

        String tempDay = "31";

        if (tempMonth.equals("1") || tempMonth.equals("3") || tempMonth.equals("5") || tempMonth.equals("7") ||tempMonth.equals("8") || tempMonth.equals("10") ||tempMonth.equals("12")) {

            tempDay = "31";

        }

        if (tempMonth.equals("4") || tempMonth.equals("6") || tempMonth.equals("9")||tempMonth.equals("11")) {

            tempDay = "30";

        }

        if (tempMonth.equals("2")) {

            if (isLeapYear(yearNum)) {

                tempDay = "29";

            } else {

                tempDay = "28";

            }

        }

//System.out.println("tempDay:" + tempDay);

        String tempDate = tempYear + "-" +tempMonth + "-" + tempDay;

        return SetDateFormat(tempDate,"yyyy-MM-dd");

    }

    public void main() throws Exception{

        System.out.println(getYearWeekFirstDay(2017,1));
    }
}
